feat(medusa): Allow empty fields/expand (#3220)

packages/medusa/src/utils/get-query-config.ts

@@ -39,7 +39,7 @@ export function getRetrieveConfig<TModel extends BaseEntity>(
 
   return {
     select: includeFields.length ? includeFields : defaultFields,
-    relations: expandFields.length ? expandFields : defaultRelations,
+    relations: isDefined(expand) ? expandFields : defaultRelations,
   }
 }
 
@@ -74,7 +74,7 @@ export function getListConfig<TModel extends BaseEntity>(
 
   return {
     select: includeFields.length ? includeFields : defaultFields,
-    relations: expandFields.length ? expandFields : defaultRelations,
+    relations: isDefined(expand) ? expandFields : defaultRelations,
     skip: offset,
     take: limit,
     order: orderBy,
@@ -88,13 +88,13 @@ export function prepareListQuery<
   const { order, fields, expand, limit, offset } = validated
 
   let expandRelations: string[] | undefined = undefined
-  if (expand) {
-    expandRelations = expand.split(",")
+  if (isDefined(expand)) {
+    expandRelations = expand.split(",").filter((v) => v)
   }
 
   let expandFields: (keyof TEntity)[] | undefined = undefined
-  if (fields) {
-    expandFields = fields.split(",") as (keyof TEntity)[]
+  if (isDefined(fields)) {
+    expandFields = (fields.split(",") as (keyof TEntity)[]).filter((v) => v)
   }
 
   if (expandFields?.length && queryConfig?.allowedFields?.length) {
@@ -144,14 +144,14 @@ export function prepareRetrieveQuery<
 >(validated: T, queryConfig?: QueryConfig<TEntity>) {
   const { fields, expand } = validated
 
-  let expandRelations: string[] = []
-  if (expand) {
-    expandRelations = expand.split(",")
+  let expandRelations: string[] | undefined = undefined
+  if (isDefined(expand)) {
+    expandRelations = expand.split(",").filter((v) => v)
   }
 
   let expandFields: (keyof TEntity)[] | undefined = undefined
-  if (fields) {
-    expandFields = fields.split(",") as (keyof TEntity)[]
+  if (isDefined(fields)) {
+    expandFields = (fields.split(",") as (keyof TEntity)[]).filter((v) => v)
   }
 
   if (expandFields?.length && queryConfig?.allowedFields?.length) {